Revert r129518, "Change ELF systems to use CFI for producing the EH tables. This reduces the"

It broke several builds.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129557 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 43 deletions

diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index baf11a77db..3d3abc2fed 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -33,7 +33,6 @@
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSymbol.h"
 #include "llvm/Target/Mangler.h"
-#include "llvm/Target/TargetAsmInfo.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetInstrInfo.h"
 #include "llvm/Target/TargetLowering.h"
@@ -625,45 +624,6 @@ static bool EmitDebugValueComment(const MachineInstr *MI, AsmPrinter &AP) {
   return true;
 }
 
-void AsmPrinter::emitPrologLabel(const MachineInstr &MI) {
-  MCSymbol *Label = MI.getOperand(0).getMCSymbol();
-  if (MAI->getExceptionHandlingType() != ExceptionHandling::DwarfCFI) {
-    OutStreamer.EmitLabel(Label);
-    return;
-  }
-
-  const MachineFunction &MF = *MI.getParent()->getParent();
-  MachineModuleInfo &MMI = MF.getMMI();
-  std::vector<MachineMove> &Moves = MMI.getFrameMoves();
-  const MachineMove *Move = NULL;
-  for (std::vector<MachineMove>::iterator I = Moves.begin(),
-         E = Moves.end(); I != E; ++I) {
-    if (I->getLabel() == Label) {
-      Move = &*I;
-      break;
-    }
-  }
-  assert(Move);
-
-  const MachineLocation &Dst = Move->getDestination();
-  const MachineLocation &Src = Move->getSource();
-  const TargetAsmInfo &AsmInfo = OutContext.getTargetAsmInfo();
-  if (Dst.isReg() && Dst.getReg() == MachineLocation::VirtualFP) {
-    if (Src.getReg() == MachineLocation::VirtualFP)
-      OutStreamer.EmitCFIDefCfaOffset(-Src.getOffset());
-    else {
-      unsigned Reg = AsmInfo.getDwarfRegNum(Src.getReg(), true);
-      OutStreamer.EmitCFIDefCfa(Reg, -Src.getOffset());
-    }
-  } else if (Src.isReg() && Src.getReg() == MachineLocation::VirtualFP) {
-    unsigned Reg = AsmInfo.getDwarfRegNum(Dst.getReg(), true);
-    OutStreamer.EmitCFIDefCfaRegister(Reg);
-  } else {
-    unsigned Reg = AsmInfo.getDwarfRegNum(Src.getReg(), true);
-    OutStreamer.EmitCFIOffset(Reg, -Dst.getOffset());
-  }
-}
-
 /// EmitFunctionBody - This method emits the body and trailer for a
 /// function.
 void AsmPrinter::EmitFunctionBody() {
@@ -700,9 +660,6 @@ void AsmPrinter::EmitFunctionBody() {
 
       switch (II->getOpcode()) {
       case TargetOpcode::PROLOG_LABEL:
-        emitPrologLabel(*II);
-        break;
-
       case TargetOpcode::EH_LABEL:
       case TargetOpcode::GC_LABEL:
         OutStreamer.EmitLabel(II->getOperand(0).getMCSymbol());